a. Calculate the required rate of return for an asset that has a beta of 1.88, given a risk-free rate of 4.5% and a market return of 9.5%. b. If investors have become more risk-averse due to recent geopolitical events, and the market return rises to 12.1%, what is the required rate of return for the same asset? a. The required rate of return for the asset is %. (Round to two decimal places.) b. If investors have become more risk-averse due to recent geopolitical events, and the market return rises to 12.1%, the required rate of return for the same asset is %. (Round to two decimal places.)